• Title/Summary/Keyword: 악취저감

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A Study on the Production of Landfill-Cover Material Using the Physical Characteristics of Sludge and the Reduction of Odor (슬러지의 물리적 특성을 이용한 매립복토재 생산과 악취저감에 대한 연구)

  • Park, Jung Hyun;Yeo, Woon Ho
    • Journal of the Korea Organic Resources Recycling Association
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    • v.28 no.2
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    • pp.15-29
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    • 2020

  • The aims of this study is to improve physical properties of the sewage sludge and the process sludge generated in the leachate treatment by mixing the dry fuel, to develop the neutral solidifing agents that reduce oder, and to recycle the sewage and the process sludges as landfill cover materials. The mixing ratio (W/W) of sludges and dry fuel was appropriate at about 1:1, and the mixed materials were shown to be homogeneous at that ratio. We could know that when the sludges were mixed with dry fuel, moisture contents and viscosities are reduced, and air passages are formed between particles and particles. The various mixing tests and odor tests showed that the neutral solidifing agent was effective for the odor reduction. The main ingredient of the solidifing agent is the ash of sewage sludge, enabling it competitive in waste recycling and production costs. The landfill cover, using developed neutral solidification agent, improved physical properties to satisfy the quality standards and to increase the compressive strength. It also proved to reduce the value of complex oder and the usage of solidification agent to 1/3 (3,000 to 1,000) and to 1/8 (50% to 6%), respectively, from the comparative study with alkaline solidified landfill cover. Further research is under way to prove that this can be mixed with general soil to be used as a soil improvement agent for plant cultivation.

  • https://doi.org/10.17137/korrae.2020.28.2.15 인용 PDF KSCI

대체에너지분야 특화ESCO 준비 '착착'

  • 에너지절약전문기업협회
    • The Magazine for Energy Service Companies
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    • s.19
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    • pp.24-27
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    • 2002

  • 지난 9월 새롭게 ESCO사업에 뛰어든 토탈이엔에스는 기존 ESCO가 시도하지 않았던 매립가스나 폐기물, 폐열 등 대체에너지를 활용한 ''특화 ESCO''로서의 포부가 당차다. 그중 매립가스 자원화사업은 경제적 수익창출은 물론 매립장 주변의 악취저감과 매립장의 조기 안정화 온실가스 저감에 따른 지구온난화 예방 등의 효과가 기대되는 것으로 이 회사는 국내 300여개의 폐기물매립장 중에서 사업성이 큰 13곳 정도를 대상으로 ESCO사업을 추진해나갈 계획이다.

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A Study on Livestock Odor Reduction Using Water Washing System (수세탈취시스템을 이용한 축산악취저감에 관한 연구)

  • Jeon, Kyoung-Ho;Choi, Dong-Yoon;Song, Jun-Ik;Park, Kyu-Hyun;Kim, Jae-Hwan;Kwag, Jung-Hoon;Kang, Hee-Sul;Jeong, Jong-Won
    • Journal of Animal Environmental Science
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    • v.16 no.1
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    • pp.21-28
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    • 2010

  • The odor problem in the livestock is increasing by 7% annually. Most importantly, the livestock odor problem in swinery accounts for the maximum ratio (54%). In this study, we reviewed the possibility of deodorizing swinery using an odor reduction device that can be used with the water washing system. First, the study confirmed that the solubility of odor gas, which was hydrogen sulfide, was very low regardless of the contact time with solvent, but the solubility of methyl mercaptan was found to increase along with the increase in time. The solubility of other odor gases, such as dimethyl sulfide, dimethyl disulfide and ammonia, was considerably high. Consequently, it is considered that if the odor reduction device for the water washing system deodorization is used in a swinery, the time during which the exhaust gas is in contact with usable water must be extended, or solvent quantity must be expanded. However, it is predicted that although hydrogen sulfide is easily generated in the anaerobic condition, it is difficult to expect high odor reduction efficiency because this gas has low solubility in water, especially in case it is used in the deodorization of the water washing system. The result of the solubility experiment using the bench-scale device practically manufactured represented the higher odor reduction ratio than expected. This result was possible because the removal efficiency of dust particles could be reached up to 93%. Therefore, it is judged that also the odor gas absorbed on dust particles could be removed by removal of dust. Consequently, it is expected that the higher order reduction ratio will be possible by structural improvement for increasing contact with water and odor gas.

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